Drill shaft head



FIG. 1 is a perspective view of a drill shaft head, showing our new design;

FIG. 2 is a front elevational view thereof, the rear elevational view being identical thereto;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof. 

The ornamental design for a drill shaft head, substantially as shown and described. 